Answer: The answer is D. Hope this helps :)
Explanation:
Answer/ explanation :
Reflex response is an involuntary, automatic and rapid response to a stimulus.
It's is controlled by the brain stem.
Reflex actions cannot be controlled. They are coordinated by nerves which moves to and fro in the spinal cord without a direct involvement of the brain.
Examples of a reflex response
Sneezing, coughing, yawning, toughing a hot object, blinking of the eyes.
There are two types of reflex response
Autonomic reflex arc
The somatic reflex arc
The reflex responses happens so quickly because they do not have to be processed by the brain before taking place.
The building block of nucleic acids are nucleotides. These consist of sugar, a phosphate, and a nitrogenous base.
This dispersal reduces the likelihood that a sperm will find an egg. Many sperm and eggs die before achieving fertilization. The low success rate of external fertilization puts animals at a reproductive disadvantage compared to internal fertilization.
Answer:
A group of similar cells that serve the same purpose.
Explanation:
a group of the same cells makes a tissue.
